#include <stdio.h>

void butler(void); /* ANSI/ISO C函数原型 */

int main(void)
{
    printf("I will summon the butler function.\n");
    butler();

    printf("Yes. Bring me some tea and writeable DVDs.\n");

    return 0;
}

void butler(void) /* function start */
{
    printf("You rang, sir?\n");
}

